C :

#include<stdio.h>

int main()
{
    int N,N1,a100,a50,a20,a10,a5,a2,a1;
    
    scanf("%d",&N);
	N1=N;
    
    a100=N/100;
    N%=100;
    a50=N/50;
    N%=50;
    a20=N/20;
    N%=20;
    a10=N/10;
    N%=10;
    a5=N/5;
    N%=5;
    a2=N/2;
    N%=2;
    a1=N/1;
    
    printf("%d\n%d nota(s) de R$ 100,00\n%d nota(s) de R$ 50,00\n%d nota(s) de R$ 20,00\n%d nota(s) de R$ 10,00\n%d nota(s) de R$ 5,00\n%d nota(s) de R$ 2,00\n%d nota(s) de R$ 1,00",N1,a100,a50,a20,a10,a5,a2,a1);
    
    return 0;
}

C++ :

#include<cstdio>

using namespace std;

int main()
{
    int N,a,b,c,d,e,f,g;
    
    scanf("%d",&N);
    
    a=N/100;
    b=N%100/50;
    c=N%100%50/20;
    d=N%100%50%20/10;
    e=N%100%50%20%10/5;
    f=N%100%50%20%10%5/2;
    g=N%100%50%20%10%5%2/1;
    printf("%d\n",N);
    printf("%d nota(s) de R$ 100,00\n",a);
    printf("%d nota(s) de R$ 50,00\n",b);
    printf("%d nota(s) de R$ 20,00\n",c);
    printf("%d nota(s) de R$ 10,00\n",d);
    printf("%d nota(s) de R$ 5,00\n",e);
    printf("%d nota(s) de R$ 2,00\n",f);
    printf("%d nota(s) de R$ 1,00",g);
    return 0;
}